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Supported metal-acidic ionic liquid catalyst and application thereof

A technology of acidic ionic liquid and catalyst, which is applied in catalytic reaction, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc. Recycling and other issues, to achieve the effect of easy separation, high catalytic activity and selectivity, and increase the value of industrial applications

Active Publication Date: 2019-08-02
HEBEI UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the liquid alkali catalyst has the advantages of cheap and easy to obtain, mild reaction conditions and high product yield, it has many disadvantages at the same time: (1) too low alkali concentration will lead to incomplete aldol reaction; (2) too high alkali concentration will lead to Cause more by-products, reduce product selectivity; (3) liquid alkali cannot be recycled, can cause problems such as production cost increase and environmental pollution
In addition, the production process of 2-propylheptanol also has problems such as long process flow, high equipment and operating costs

Method used

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  • Supported metal-acidic ionic liquid catalyst and application thereof
  • Supported metal-acidic ionic liquid catalyst and application thereof
  • Supported metal-acidic ionic liquid catalyst and application thereof

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Embodiment Construction

[0020] In order to better understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] 1. Experimental content

[0022] The internal reaction mechanism of n-valeraldehyde self-condensation to 2-propylheptanol includes two processes: one is the aldol condensation of n-valeraldehyde to obtain 2-propyl-2-heptenal, and the other is 2-propyl-2-heptenal Hydrogenation of alkenals yields 2-propylheptanol ( figure 1 ). The above two reaction mechanisms can be integrated under suitable catalysts and conditions. After regulating the aldol condensation of n-valeraldehyde to generate 2-propyl-2-heptenal, 2-propyl-2-heptenal is then added The hydrogen reaction produces products, and the two mechanisms are promoted synergistically. The rapid consumption of intermediate products can promote the reaction balance to shift to the product direction, which is conducive to improving the efficiency of the reaction...

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Abstract

The invention provides a supported metal-acidic ionic liquid catalyst which is supported with reductive metal and acidic ionic liquid simultaneously on a solid phase carrier. The catalyst provided bythe invention has advantages of high catalytic activity and selectivity, easy separation and the like, and is especially suitable for technical requirements on direct synthesis of 2-propylheptanol from n-valeraldehyde. A green novel process for directly synthesizing 2-propylheptanol from n-valeraldehyde catalyzed by supported metal-acidic ionic liquid, provided by the invention, can greatly shorten process flows of industrial synthesis of 2-propylheptanol and reduce equipment costs and operation costs.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis catalysts, in particular to a supported metal-acidic ionic liquid catalyst, and to the specific application of the catalyst. Background technique [0002] 2-Propylheptanol is an important plasticizer alcohol. It can react with phthalic anhydride, trimellitic anhydride, adipic acid and other polyacids and anhydrides to synthesize various ester plasticizers, among which di(2-propylheptyl) phthalate (DPHP) synthesized by reacting with phthalic anhydride is the main . Compared with dioctyl phthalate (DOP), a traditional plasticizer based on octanol (2-ethylhexanol), DPHP has the advantages of low toxicity and low volatility. It is precisely because of the safety risks of the traditional plasticizer DOP that developed countries such as Europe, America, Japan, and South Korea have introduced policies to restrict or even prohibit its use, which has prompted a rapid increase in the demand for...

Claims

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Application Information

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IPC IPC(8): B01J31/02C07C29/17C07C31/125
CPCB01J31/0285B01J31/0295B01J2231/4205B01J2231/643B01J2231/645C07C29/175C07C31/125
Inventor 安华良王娣赵新强王延吉
Owner HEBEI UNIV OF TECH
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